title: Usefulness of serological ELISA assay for Taenia saginata to detect naturally infected bovines.
abstract: Bovine cysticercosis, a cosmopolitan disease caused by Taenia saginata, leads to economic losses due to carcass devaluation at slaughter. Sanitary inspection at slaughterhouses, the routine diagnostic method in Brazil, lacks the necessary sensitivity to detect the mildly infected cattle that are typically encoutered in Brazil. In this study we have tested cattle sera from animals diagnosed as positive and negative by veterianry inspection for (1) anti-parasite antibodies using metacestodes antigens (T. solium vesicular fluid and T. saginata secretions) and (2) the HP10 secreted antigen of viable metacestodes. The cut-off values were calculated by ROC curve for intense and mild infections conditions, and by the classical method ( for negative samples). The sensitivity and specificity of these diagnostic tests were different depending on the assumed cut-off value and, importantly, whether the infection was mild or intense. In spite of these observations, however, such ELISA assays for serum antibodies and parasite antigens constitute an important tool for epidemiological porposes, and in establishing priorities for the control of bovine cysticercosis.
authors.affiliation: Departamento de Apoio, Produção e Saúde Animal, Universidade Estadual Paulista Júlio de Mesquita Filho, Araçatuba, SP, Brazil.
authors.forename: Silvana de Cássia
authors.initials: Sde C
authors.lastname: Paulan
authors.forename: Rutilia Marisela Hernándes
authors.initials: RM
authors.lastname: Gonzáles
authors.forename: Laura Adalid
authors.initials: LA
authors.lastname: Peralta
authors.forename: Josy Campanhã
authors.initials: JC
authors.lastname: Vicentini-Oliveira
authors.forename: Germano Francisco
authors.initials: GF
authors.lastname: Biondi
authors.forename: Edda Sciuto
authors.initials: ES
authors.lastname: Conde
authors.forename: Robert Michael Evans
authors.initials: RM
authors.lastname: Parkhouse
authors.forename: Cáris Maroni
authors.initials: CM
authors.lastname: Nunes
mesh_terms: D000818:Animals; D000947:Antigens, Helminth / Q000097:blood*; D002417:Cattle / Q000097:blood*; D002418:Cattle Diseases / Q000097:blood* / Q000175:diagnosis*; D003551:Cysticercosis / Q000097:blood / Q000175:diagnosis / Q000662:veterinary*; D004797:Enzyme-Linked Immunosorbent Assay; D012698:Serologic Tests; D041202:Taenia saginata / Q000276:immunology*
chemical_list: D000947:Antigens, Helminth